package com.atgugu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author ZhangXinWang
 * @date 2021/8/2 12:36
 */
@Service
public class PaymentService {

    public String paymentInfo_OK(Integer id) {
        return "线程池: " + Thread.currentThread().getName() + " OK,id: " + id + "\t" + "^_^";
    }


    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",
            commandProperties = {
                    @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
            })
    public String paymentInfo_TimeOut(Integer id) {
        int timeNumber = 6000;
        try {
            TimeUnit.MILLISECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
//        int age = 10/0;
        return "线程池: " + Thread.currentThread().getName() + " TimeOut,id: " + id + "\t" + "^_^" + " 耗时(毫秒): " + timeNumber;
    }

    public String paymentInfo_TimeOutHandler(Integer id) {
        return "线程池: " + Thread.currentThread().getName() + " 系统繁忙或者运行报错,请稍后再试,id: " + id + "\t" + "#_#";
    }

    //=====服务熔断 可配置参数参考 HystrixCommandProperties
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"), //请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"), //时间窗口期(ms)
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60")// 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("*****id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName() + "\t" + "调用成功" + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id 不能负数,请稍后再试,#_# id: " + id;
    }

}
